html,
body,
#app {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}

#save {
  position: fixed;
  top: 10px;
  left: 50%;
  transform: translate(-50%);
  width: 100px;
  height: 50px;
  font-size: 16px;
  cursor: pointer;
}
